Introduction to Waterproof Breathable Valve and Explosion proof Pressure Relief Valve
Metal waterproof breathable valve is a new type of waterproof breathable component, which combines the waterproof breathable membrane with other materials such as metal and silicone rubber through riveting to form a sealed installation component; It can prevent dust, water, or other harmful substances from entering while maintaining pressure balance inside and outside the equipment. It has the advantages of stable performance, simple installation, extended product life cycle, and high waterproof and breathable performance.
Metal pressure relief explosion-proof valve is a new type of waterproof and breathable component. The connecting rod structure is compressed by a spring and combined with other materials such as metal and silicone rubber to form a sealed installation component; It can prevent dust, water, or other harmful substances from enteringwhile maintaining pressure balance inside and outside the equipment. It has the advantages of fast pressure relief and explosion prevention, high accuracy of ignition point, automatic reset for continued use after explosion, stable performance, simple installation, and extended product life cycle.
●waterproof principle of waterproof ventilation valve
The metal waterproof breathable valve, under normal conditions in the sealed chamber, experiences an increase in internal air pressure due to the rise in external ambient temperature, causing air to flow outward. On the contrary, when the external environment decreases, the air pressure in the wind section of the cavity decreases, and air enters the cavity. Shangda metal waterproof breathable valve adopts a new type of expanded polytetrafluoroethylene with uniform stretching and a three-dimensional mesh structure film. The diameter of micropores is between 0.1-10 μ m, and the molecules of air and water vapor are 0.0004 μ m. The pore size of (e-PTFE) film is 250-25000 times larger than that of gas, so gas can pass through. The diameter of drizzle is 500 μ m, which is hundreds of times larger than the diameter of micropores in the film. These tiny pores, which are only one twenty thousandth the size of a drop of water, can prevent water, dirt, and debris from entering the (e-PTFE) film. By allowing air to freely enter and exit the sealed shell, the film balances pressure and prevents water, corrosive liquids, salt, and particulate matter from entering the shell and damaging the interior of the sealed equipment, making our sealing equipment more reliable, safe, and durable.
●Explosion-proof pressure relief valve waterproof principle
When the sealed chamber is operating normally and the internal pressure value is normal, Shangda’s pressure relief product continuously exhausts the sealed chamber, making it waterproof, dustproof, and breathable. Similar to the working principle of traditional breathable valves, under normal conditions, the increase in external ambient temperature leads to an increase in air pressure inside the sealed chamber, causing air to flow outward. Conversely, when the external ambient temperature decreases, the air pressure inside the sealed chamber decreases, and air enters the chamber; At the same time, the pressure relief valve is equipped with e-PTFE membrane components, which are dust-proof, liquid proof, pollution proof, and particle proof. When abnormal operation occurs in the sealed chamber, the internal pressure rises sharply and exceeds the set explosion value. A large amount of gas pushes the Shangda pressure relief product to instantly connect with the outside, and a large amount of gas is discharged, quickly releasing the strong pressure inside the sealed chamber, avoiding explosion and reducing explosion damage. In addition, the Shangda pressure relief product has high accuracy in the ignition point and can automatically reset to continue use, protecting the sealed body and reducing maintenance costs.
